CN104672336A - Corn starch production process - Google Patents
Corn starch production process Download PDFInfo
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- CN104672336A CN104672336A CN201510065087.5A CN201510065087A CN104672336A CN 104672336 A CN104672336 A CN 104672336A CN 201510065087 A CN201510065087 A CN 201510065087A CN 104672336 A CN104672336 A CN 104672336A
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Abstract
The invention belongs to the field of food processing process, and relates to a corn starch production process. The corn starch production process mainly comprises the following steps of: purifying; soaking; crushing; screening; separating; dehydrating; drying; packaging. Compared with the prior art, the corn starch production process disclosed by the invention has the advantages and beneficial effects of applying a horizontal screw centrifuge to the corn starch production process by utilizing the characteristic of continuous dehydration of the horizontal screw centrifuge to substitute for the traditional horizontal scraping knife centrifuge, thereby enhancing the yield of starch; in addition, the starch produced through the integral process is fine, fewer in impurity, thorough in separation and good in quality.
Description
Technical field
The invention belongs to food processing technology field, relate to a kind of production of corn starch technique.
Background technology
The starch producing technology of current domestic present use, in smart starch milk dewaters this link, all adopt horizontal type scraper centrifuger to dewater to smart starch milk, horizontal type scraper centrifuger belongs to the filtering centrifuge of continuous running, periodical operation, the centrifugal force mainly utilizing the rotary drum of rotation to drive to produce when high speed rotating made by material in the rotary drum machinery that different and immiscible liquid carries out being separated with the suspension of solid particulate by two kinds of density.The processes such as the charging in horizontal type scraper centrifuger operating process, separation, washing, dehydration, discharging and filter cloth regeneration generally all complete under full-speed state, and the single cycle time is short, and treatment capacity is large, and can obtain more dry filter residue and good washing effect.
Although horizontal type scraper centrifuger can obtain more dry filter residue and good washing effect after dewatering to smart starch milk.But the filter cloth of horizontal type scraper centrifuger work after 2 hours dehydrating effect be just progressively deteriorated, the moisture of discharging starch can not ensure, the water content of starch causes burden to Air Dried System, and unit output reduces, and steam consumption increases.Cause commodity starch moisture to fluctuate comparatively large, affect starch quality and yield, in dehydration, get rid of liquid dry matter content about about 12%, about have 1/3rd dries of smart starch milk to reflux, increase burden to 12 grades of starch washings and starch separator.
Summary of the invention
The present invention is directed to the technical problems such as above-mentioned smart starch milk dehydrating effect is not good, propose a kind of rational technology, production of corn starch technique that smart starch milk dewaters splendid.
In order to achieve the above object, the technical solution used in the present invention is, a kind of production of corn starch technique, is characterized in that, comprise the following steps:
A, purification: raw material corn is sent into corn trommel screen, removing impurity;
B, immersion: the raw material corn after purification is put into corn blending bin and mixes with rare corn steep liquor, and send into steeping tank immersion;
C, fragmentation: by soak qualified raw material corn again with water after blending bin mixes, divide through corn dividing water sieve and enter corn degerming mill after water and carry out fragmentation, separated plumule;
D, bent sieve: by rare corn steep liquor of the acquisition after fragmentation, send into pressure curved sieve, sift out fiber and coarse starch milk through pressure curved sieve;
E, separation: by after song sieve obtain coarse starch milk slagging-off after, put into starch separator and carry out albumen sepn, after isolating most of protein, enter swirler and refine, obtain containing crystal's starch milk.
F, dehydration: utilize Horizontal helical type centrifuge to dewater to containing crystal's starch milk;
G, drying: by the starch milk after dehydration, be admitted in drying tube and carry out drying.
As preferably, described dehydrating step detailed process is as follows: start at full speed at the rotary drum of horizontal screw centrifuge, to enter in the spiral conveyer of horizontal screw centrifuge by opening for feed containing crystal's starch milk, under centrifugal action, essence starch milk enters rotary drum by the feed port in spiral conveyer cylindrical shell, the starch that proportion is larger is heavy to be attached on rotatory drum wall, form an annular starch layer, spiral conveyer is under the effect of the differential mechanism of horizontal screw centrifuge, spiral conveyer and rotary drum is made to produce a constant differential speed, starch milk after dehydration is released from starch outlet, clear liquor is overflowed by overflow port.
As preferably, described rotary drum rotating speed 3100-3600r/min.
As preferably, described spiral conveyer and rotary drum differential speed difference 80-100r/min.
As preferably, described step also comprises: h, packaging: by dried dry starch after the separation of cyclonic separator, enters automatic electronic packing scale automatic Weighing, packaging.
As preferably, described immersion process corn mixes with the ratio of 1:3 with rare corn steep liquor in blending bin.
As preferably, soak qualified raw material corn in described shattering process and mix in blending bin in 1:3 ratio with water.
As preferably, described pressure curved sieve is six stage pressures song sieves.
As preferably, described swirler is ten second cyclones.
As preferably, the concentration of described coarse starch milk just can remove the gred after 5.0-8.0Be.
Compared with prior art, advantage of the present invention and positively effect are,
1, the present invention utilizes Horizontal helical type centrifuge can the characteristic of continuously dehydrating, is applied in production of corn starch technique, replaces existing horizontal type scraper centrifuger, what improve starch collects rate, the starch that whole technique is produced is meticulous, and impurity is few and starch separation thorough, and starch quality is good.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with embodiment, the present invention will be further described.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention, but the present invention can also adopt and be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of the specific embodiment of prospectus below.
Embodiment one, the present embodiment provides a kind of embodiment of production of corn starch technique, and this technique mainly comprises the following steps: purification, soak, broken, bent sieve, be separated, dehydration, dry, packaging.
Purifying step: raw material corn, through sending into scrapper conveyor after the assay was approved, is delivered to corn trommel screen by lift, sifted out partial impurities, delivers to corn bunker, for corn soaking through travelling belt by lift.
Soaking step: open corn bunker baiting valve, start corn travelling belt, corn is delivered to after bolting through travelling belt, be transported to corn blending bin to mix with the ratio of 1:3 with rare corn steep liquor, with being pumped into steeping tank, after in tank, corn fills, up-to-date corn is soaked with the oldest slurries, corn sulfurous acid solution soaks, and carry out repeats itself, after soaking corn is qualified, open baiting valve and hot-water cylinder feed water valve, ratio of water to material in 3:1 ratio blending bin mixing after, with being pumped into corn dividing water sieve, corn storage tank is sent into after a point water sieve divides water, broken for corn.
Destruction step: open corn degerming mill water adjusting valve, pull up discharge flapper, regulate ratio of water to material 3:1 to carry out fragmentation, the material after fragmentation carries out germ separation, and isolated plumule is with being pumped into plumule post, after sieve, thing enters the front tank of mill, broken through twice, the rare corn steep liquor after twice germ separation, after pressure curved sieve sieve removes part coarse starch milk, carry out a fine grinding, the rare corn steep liquor after fine grinding is delivered to bent sieve post and is carried out sieving, washing.
Bent sieve step: the feed liquid after fine grinding sieve with song in tank after mill one-level wash sieve after thing mix, squeeze into secondary with pump and carry pulp screen, after sieve, thing enters magma tank, screen overflow enters bent sieve 1# groove, and then squeeze into secondary washing sieve with pump, this process repeats six times, fresh process water adds from 6# rinse bath, carry starch to return forward step by step, pure starch milk is expelled to the rear tank of mill from first class pressure song sieve sieve, and the screen overflow of six stage pressure sieves send fiber operation.
Separating step: the coarse starch milk 5.0-8.0Be after separated fiber removes impurity through skim gate, enter starch separator and carry out albumen sepn, after isolating most of protein, enter ten second cyclones to refine, by adding a fresh water, starch milk is washed in swirler, remove portion soluble proteins and some ash impurities, obtain purified starch breast, concentration >=19Be, send continuously dehydrating operation, ten second cyclones one-level overflowing liquid out returns magma tank, the isolated albumen Huang of separating machine is starched into albumen seitan thickner, isolated gluten water enters fragmentation, bent sieve is used as blanking washing water, water at the bottom of starch separator, unnecessary gluten water enters perpendicular stream tank precipitation, and isolated dense seitan feeding vacuum filter carries out dehydration and concentrates.
Dehydrating step, Drum of Horizontal Screw Centrifuge Based and spiral conveyer are started at full speed, aqueous starch breast is entered in spiral conveyer by opening for feed, the flow of charging is 5t/h, under centrifugal action, starch milk enters rotary drum by the feed port in spiral conveyer cylindrical shell, the starch that proportion is larger is heavy to be attached on rotatory drum wall, in rotary drum, (rotary drum rotating speed is 3100r/min) forms an annular starch layer, spiral conveyer is under the effect of differential mechanism, spiral and rotary drum is made to produce a constant differential speed (80r/min), starch milk after dehydration is released from starch outlet, clear liquor (starch-containing amount is 3Be) is overflowed by overflow port.
Clear liquor through dehydrating step can be recovered in swirler after collection, replaces a fresh water of a part to wash starch milk, saving water resources that like this can be a large amount of, environmental protection simultaneously, health.
Drying step: wet starch is sent into drying tube through loudspeaker by feeding screw conveyor, the hot gas flow come with interchanger in drying tube contacts, moisture content rapid evaporation, wet starch moisture content is down to acceptability limit (≤14%), this technique adopts negative pressure drying, by induced draft fan, hot gas flow in drying tube is extracted out, in drying tube, keep certain negative pressure.
Packaging step: dried dry starch enters mixing auger through the separation of primary cyclone, enter secondary cyclone be again separated through air sealer, wind fan under the effect of mixing auger, dry starch after separation enters automatic electronic packing scale automatic Weighing through air sealer, packaging adopts multiple film woven bag or polyethylene plastic bag, every bag of net weight 25kg or 40kg, after Origuchi puts into finished product conformity certification seam bag, piling is to be checked.
Soak solution after soaking step under cryogenic vacuum condition, can utilize triple effect falling-film evaporator by falling film evaporation process, soak solution is concentrated to 18-24Be, carries out storage sell with pumping corn stock tank.
Contrast as follows with existing horizontal type scraper centrifuger starch complete processing:
Embodiment 2: present embodiments provide the another kind of embodiment of this production of corn starch technique:
This embodiment is carried out according to the mode identical with embodiment 1, just dehydrating step is as follows: Drum of Horizontal Screw Centrifuge Based and spiral conveyer start at full speed, aqueous starch milk flow amount is 20t/h, enter in spiral conveyer by opening for feed, under centrifugal action, starch milk enters rotary drum by the feed port in spiral conveyer cylindrical shell, the starch that proportion is larger is heavy to be attached on rotatory drum wall, in rotary drum, (rotary drum rotating speed is 3600r/min) forms an annular starch layer, spiral conveyer is under the effect of differential mechanism, spiral and rotary drum is made to produce a constant differential speed (100r/min), starch milk after dehydration is released from starch outlet, clear liquor (starch-containing amount is 3Be) is overflowed by overflow port.
Contrast as follows with existing horizontal type scraper centrifuger starch complete processing:
Embodiment 3: present embodiments provide the another kind of embodiment of this production of corn starch technique:
This embodiment is carried out according to the mode identical with embodiment 1, just dehydrating step is as follows: Drum of Horizontal Screw Centrifuge Based and spiral conveyer start at full speed, aqueous starch milk flow amount 5t/h enters in spiral conveyer by opening for feed, under centrifugal action, starch milk enters rotary drum by the feed port in spiral conveyer cylindrical shell, the starch that proportion is larger is heavy to be attached on rotatory drum wall, in rotary drum, (rotary drum rotating speed is 3600r/min) forms an annular starch layer, spiral conveyer is under the effect of differential mechanism, spiral and rotary drum is made to produce a constant differential speed (85r/min), starch milk after dehydration is released from starch outlet, clear liquor (starch-containing 3Be) is overflowed by overflow port.
Contrast as follows with existing horizontal type scraper centrifuger starch complete processing:
The above; it is only preferred embodiment of the present invention; it is not restriction the present invention being made to other form; the Equivalent embodiments that any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as equivalent variations is applied to other field; but everyly do not depart from technical solution of the present invention content; according to any simple modification, equivalent variations and remodeling that technical spirit of the present invention is done above embodiment, still belong to the protection domain of technical solution of the present invention.
Claims (10)
1. a production of corn starch technique, is characterized in that, comprises the following steps:
A, purification: raw material corn is sent into corn trommel screen, removing impurity;
B, immersion: the raw material corn after purification is put into corn blending bin and mixes with rare corn steep liquor, and send into steeping tank immersion;
C, fragmentation: by soak qualified raw material corn again with water after blending bin mixes, divide through corn dividing water sieve and enter corn degerming mill after water and carry out fragmentation, separated plumule;
D, bent sieve: by rare corn steep liquor of the acquisition after fragmentation, send into pressure curved sieve, sift out fiber and coarse starch milk through pressure curved sieve;
E, separation: by after song sieve obtain coarse starch milk slagging-off after, put into starch separator and carry out albumen sepn, after isolating most of protein, enter swirler and refine, obtain containing crystal's starch milk.
F, dehydration: utilize Horizontal helical type centrifuge to dewater to containing crystal's starch milk;
G, drying: by the starch milk after dehydration, be admitted in drying tube and carry out drying.
2. production of corn starch technique according to claim 1, it is characterized in that, described dehydrating step detailed process is as follows: start at full speed at the rotary drum of horizontal screw centrifuge, to enter in the spiral conveyer of horizontal screw centrifuge by opening for feed containing crystal's starch milk, under centrifugal action, essence starch milk enters rotary drum by the feed port in spiral conveyer cylindrical shell, the starch that proportion is larger is heavy to be attached on rotatory drum wall, form an annular starch layer, spiral conveyer is under the effect of the differential mechanism of horizontal screw centrifuge, spiral conveyer and rotary drum is made to produce a constant differential speed, starch milk after dehydration is released from starch outlet, clear liquor is overflowed by overflow port.
3. production of corn starch technique according to claim 2, is characterized in that, described rotary drum rotating speed 3100-3600r/min.
4. production of corn starch technique according to claim 3, is characterized in that, described spiral conveyer and rotary drum differential speed difference 80-100r/min.
5. production of corn starch technique according to claim 1, is characterized in that, described step also comprises: h, packaging: by dried dry starch after the separation of cyclonic separator, enters automatic electronic packing scale automatic Weighing, packaging.
6. production of corn starch technique according to claim 1, is characterized in that, described immersion process corn mixes with the ratio of 1:3 with rare corn steep liquor in blending bin.
7. production of corn starch technique according to claim 1, is characterized in that, soaks qualified raw material corn and mix in blending bin in 1:3 ratio with water in described shattering process.
8. production of corn starch technique according to claim 1, is characterized in that, in the sieved journey of described song, described pressure curved sieve is six stage pressure song sieves.
9. production of corn starch technique according to claim 1, is characterized in that, in described sepn process, described swirler is ten second cyclones.
10. production of corn starch technique according to claim 1, is characterized in that, in described sepn process, the concentration of described coarse starch milk just can remove the gred after 5.0-8.0Be.
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| CN105146046A (en) * | 2015-07-29 | 2015-12-16 | 山东祥瑞药业有限公司 | Improved horizontal screw centrifuge for corn protein dehydration and corn protein production technology |
| CN105237646A (en) * | 2015-11-16 | 2016-01-13 | 北京劢克机械工程有限公司 | Technology and device for soaking procedure in corn deep-processing process |
| CN105394727A (en) * | 2015-11-30 | 2016-03-16 | 济南金王食品股份有限公司 | Preparation method of natural thickening agent |
| CN107188972A (en) * | 2017-05-22 | 2017-09-22 | 上海正邻机电自动化设备有限公司 | A kind of production of corn starch technique |
| CN108991415A (en) * | 2018-06-29 | 2018-12-14 | 襄阳三珍生态农业有限公司 | A kind of production method of nutrition acorn nut huyashi-chuuka (cold chinese-style noodles) |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105146046A (en) * | 2015-07-29 | 2015-12-16 | 山东祥瑞药业有限公司 | Improved horizontal screw centrifuge for corn protein dehydration and corn protein production technology |
| CN105237646A (en) * | 2015-11-16 | 2016-01-13 | 北京劢克机械工程有限公司 | Technology and device for soaking procedure in corn deep-processing process |
| CN105237646B (en) * | 2015-11-16 | 2018-04-13 | 北京劢克机械工程有限公司 | The Processes and apparatus of process is soaked during corn deep processing |
| CN105394727A (en) * | 2015-11-30 | 2016-03-16 | 济南金王食品股份有限公司 | Preparation method of natural thickening agent |
| CN107188972A (en) * | 2017-05-22 | 2017-09-22 | 上海正邻机电自动化设备有限公司 | A kind of production of corn starch technique |
| CN108991415A (en) * | 2018-06-29 | 2018-12-14 | 襄阳三珍生态农业有限公司 | A kind of production method of nutrition acorn nut huyashi-chuuka (cold chinese-style noodles) |
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Application publication date: 20150603 |